A1: If the temperature of laptop adapter is between 30degree and 70degree,please do not worry,this is normal phenomenon,it won\'t damage itself and laptop. Q2: Will 65w adapters can work on 90w laptop? A2: We do not recommend using 65w adapters to charge for 90w laptop,which will broke your laptop. Q3: What can we do if the adapter start to heat dissipation? A3: 1)when the laptop battery are filled with power,charging completed,the heat dissipation will be relieved. 2)When the mass of programms are working at the same time,such as playing games,watching TV,etc.The heat dissipation will be bigger. 3)Please keep a good environment to let adapter heat dissipation. Q4.What\'s your warranty? A4:One year Warranty.